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Enhanced FP Decay Heat Calculation Model for Nuclear Reactor Safety

Explore the development of FP decay heat calculation models in the nuclear industry since the 1970s. Learn about the impact of beta-decay theory on improving accuracy, featuring JENDL and ENDF data sets. Utilize JEFF3.1 as a foundational future TAGS data source.

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Enhanced FP Decay Heat Calculation Model for Nuclear Reactor Safety

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  1. Our Objective : An Ideal Situation of the Summation Calculation of the FP Decay Heat

  2. Summation Calculation of FP Decay Heat λi Eiβ Ni Pβ（ｔ） = ∑ (β-rayComponent) Pγ（ｔ） = ∑ λi Ni Eiγ (γ-rayComponent) λi : Decay Constant Eiβ, Eiγ : Average β- and γ-ray energy per decay

  3. Early Stage of the FPDD File Development In the end of 1970’s : JNDC(JENDL), UKPFDD,ENDF-B

  4. Improvement Achieved by Introduction of Beta-decay Theory JENDL, ENDF/B-V,-VI Gross Theory of Beta-decay U235, Beta U235, Gamma

  5. JEFF3.1 may be a good basis for introduction of the future TAGS data

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